Fix for eventCallback argument
Fix for eventCallback argument

`docker.StartMonitorEvents` requires `func(*dockerclient.Event, ...interface {})` in function argument
divideandconquer/dockerclient,crhym3/dockerclient,flavio/dockerclient,samalba/dockerclient,jimmyxian/dockerclient,selvik/dockerclient,abronan/dockerclient,yp-engineering/dockerclient,curoverse/dockerclient,BlueDragonX/dockerclient,bajh/dockerclient,appfront/go-docker,ehazlett/dockerclient,mountkin/dockerclient,dnephin/dockerclient,ibuildthecloud/dockerclient,turtlebender/dockerclient,denverdino/dockerclient,yhat/go-docker,donhcd/dockerclient